A combination of orbital debris and astronomy issues. A big antenna means it's more likely to be hit by other satellites, and it'll be brighter.

There's a good chance this might mean these are limited to the ~350 KM shells, which will deorbit faster (limiting debris risk), and will go into sunset sooner.

Is that an actual concern? Honestly sounds kinda nonsensical to me but I don't know enough about antenna size in orbit regulation.

It is indeed nonsensical, but it was covered by every news outlet a couple of years ago.

Astronomy issues: https://en.wikipedia.org/wiki/Satellite_flare#Mega-constella...

Orbital debris: https://en.wikipedia.org/wiki/Kessler_syndrome#Potential_tri...

Nobody bothered to look at the details.

> Nobody bothered to look at the details.

This is a solid contender for humanity's epitaph.

I read the links, but I'm not seeing where the concerns are nonsensical.

The links are just background info.

The concerns are difficult to dispute because they’re “not even wrong”. There are no specific claims that can be disputed.

Serious astronomers don’t just look at a photo with bright dots and get confused because some of them are satellites. A few predictable bright pixels are the least of their concerns.

As far as space debris, see https://en.m.wikipedia.org/wiki/List_of_space_debris_produci...